From 08163a848c3a063f30260d4a24f86310bf197fd6 Mon Sep 17 00:00:00 2001
From: Steven Rollason <2099542+gadgetchnnel@users.noreply.github.com>
Date: Sat, 6 Feb 2021 13:05:50 +0000
Subject: [PATCH] Fix downloader path validation on subdir (#46061)

---
 homeassistant/components/downloader/__init__.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/homeassistant/components/downloader/__init__.py b/homeassistant/components/downloader/__init__.py
index 94617ce43aa..3856df696ad 100644
--- a/homeassistant/components/downloader/__init__.py
+++ b/homeassistant/components/downloader/__init__.py
@@ -70,8 +70,9 @@ def setup(hass, config):
 
                 overwrite = service.data.get(ATTR_OVERWRITE)
 
-                # Check the path
-                raise_if_invalid_path(subdir)
+                if subdir:
+                    # Check the path
+                    raise_if_invalid_path(subdir)
 
                 final_path = None